What are the figures obtained by cutting a cylinder, a cone or a frustum through the plane of the axis of the following body of revolution? It's urgent. Thank you

What are the figures obtained by cutting a cylinder, a cone or a frustum through the plane of the axis of the following body of revolution? It's urgent. Thank you

The cross section of the axis through a cylinder is a rectangle, also called a rectangle
The axial section of a cone is an isosceles triangle
The shaft section of the cone is isosceles trapezoid
It is suggested to use the semi section method, that is, to cut the geometry from the middle to observe the shape of the section